/**
* Try to parse an identifier which is followed by an opern bracket as
* astoria URI function call.
*
* @return AbstractExpression
*
* @throws ODataException
*/
private function _parseIdentifierAsFunction()
{
$functionToken = clone $this->_getCurrentToken();
$functions = FunctionDescription::verifyFunctionExists($functionToken);
$this->_lexer->nextToken();
$paramExpressions = $this->_parseArgumentList();
$function = FunctionDescription::verifyFunctionCallOpArguments($functions, $paramExpressions, $functionToken);
return new FunctionCallExpression($function, $paramExpressions);
}
